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Tracepoint: Add trace point to test NLJ and SPF batch rescan

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obdev
2023-12-22 15:42:36 +00:00
committed by ob-robot
parent 9076dadcd4
commit abef1a89a4
5 changed files with 55 additions and 4 deletions
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32
src/sql/optimizer/ob_join_order.cpp
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@ -1547,8 +1547,10 @@ int ObJoinOrder::will_use_das(const uint64_t table_id,
create_basic_path = false;
} else if ((helper.is_inner_path_ || get_tables().is_subset(get_plan()->get_subq_pdfilter_tset())) &&
!is_virtual_table(ref_id)) {
bool force_use_nlj = false;
force_use_nlj = (OB_SUCCESS != (OB_E(EventTable::EN_GENERATE_PLAN_WITH_NLJ) OB_SUCCESS));
create_das_path = true;
create_basic_path = true;
create_basic_path = force_use_nlj ? false : true;
} else if (index_info_entry->is_index_global() && ObGlobalHint::UNSET_PARALLEL == explicit_dop) {
// for global index use auto dop, create das path and basic path, after get auto dop result, prune unnecessary path
create_das_path = true;
@ -11277,6 +11279,14 @@ int ObJoinOrder::get_valid_path_info(const ObJoinOrder &left_tree,
path_info.local_methods_ &= ~MERGE_JOIN;
OPT_TRACE("right semi/anti join can not use nested loop/merge join");
}
if (OB_SUCC(ret)) {
bool force_use_nlj = false;
force_use_nlj = (OB_SUCCESS != (OB_E(EventTable::EN_GENERATE_PLAN_WITH_NLJ) OB_SUCCESS));
if (force_use_nlj) {
path_info.local_methods_ &= ~MERGE_JOIN;
path_info.local_methods_ |= NESTED_LOOP_JOIN;
}
}
//check batch update join type
if (OB_SUCC(ret) && get_plan()->get_optimizer_context().is_batched_multi_stmt()) {
// left_tree is the generated table of batch params and right tree is other path -> NLJ
@ -12132,6 +12142,26 @@ int ObJoinOrder::create_and_add_nl_path(const Path *left_path,
LOG_TRACE("succeed to create a nested loop join path", K(join_type),
K(join_dist_algo), K(need_mat), K(on_conditions), K(where_conditions));
}
// Trace point to force use NLJ as possible
if (OB_SUCC(ret)) {
bool force_use_nlj = false;
force_use_nlj = (OB_SUCCESS != (OB_E(EventTable::EN_GENERATE_PLAN_WITH_NLJ) OB_SUCCESS));
if (force_use_nlj && !join_path->contain_normal_nl_) {
LOG_TRACE("trigger trace point to generate nest-loop join");
if (OB_FAIL(interesting_paths_.push_back(join_path))) {
LOG_WARN("failed to push back nlj path");
} else {
for (int64_t i = interesting_paths_.count() - 1; OB_SUCC(ret) && i >= 0; --i) {
JoinPath *join_path = reinterpret_cast<JoinPath *>(interesting_paths_.at(i));
if (join_path->join_algo_ != NESTED_LOOP_JOIN) {
if (OB_FAIL(interesting_paths_.remove(i))) {
LOG_WARN("failed to remove dominated plans", K(i), K(ret));
}
}
}
}
}
}
}
return ret;
}